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Python: most idiomatic way to convert None to empty string?
...
If you actually want your function to behave like the str() built-in, but return an empty string when the argument is None, do this:
def xstr(s):
if s is None:
return ''
return str(s)
...
Perform Segue programmatically and pass parameters to the destination view
...t you are asking. In this case I am passing data from a selected cell in a table view to another view controller.
in the .h file of the trget view:
@property(weak, nonatomic) NSObject* dataModel;
in the .m file:
@synthesize dataModel;
dataModel can be string, int, or like in this case it's...
How are GCC and g++ bootstrapped?
...ilt
(optional) repeat step 2 for verification purposes.
This process is called bootstrapping. It tests the compiler's capability of compiling itself and makes sure that the resulting compiler is built with all the optimizations that it itself implements.
EDIT: Drew Dormann, in the comments, point...
Proper MIME type for OTF fonts
... well SFNT, the scalable/spline container font format used in the backbone table reference of Google Web Fonts with their sfntly java library and is already registered as a mime type with IANA and could be added to this list as well dependent on individual need.
UPDATE October 4, 2017: We can follo...
What is Activity.finish() method doing exactly?
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That table is really useful and descriptive (you have to scroll down a little bit) developer.android.com/reference/android/app/…
– winklerrr
Dec 12 '16 at 16:10
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Macro vs Function in C
...uct webpage page;
page.numButtons = 2;
num_button_holes(page) -> 8
Finally, macros can be difficult to debug, producing weird syntax errors or runtime errors that you have to expand to understand (e.g. with gcc -E), because debuggers cannot step through macros, as in this example:
#define prin...
is there a css hack for safari only NOT chrome?
...3 (early 2020 Update) *
PLEASE PLEASE -- If you are having trouble, and really want to get help or help others by posting a comment about it, Post Your Browser and Device (MacBook/IPad/etc... with both browser and OS version numbers!)
Claiming none of these work is not accurate (and actually not ev...
Swift: #warning equivalent
...builds clean in production, but I get a warning in development that essentially reminds me I'm in dev mode - using different URLs, timeouts, other settings etc. Arie's suggestion above lets me do this, your technique just flags everything. That said, this technique has its use for sure so I up voted...
Instagram how to get my user id from username?
...ow:
https://www.instagram.com/{username}/?__a=1
E.g:
This url will get all information about a user whose username is therock
https://www.instagram.com/therock/?__a=1
Update i June-20-2019, the API is public now. No authentication required.
Update in December-11-2018, I needed to confirm t...
In Python, how do I indicate I'm overriding a method?
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Based on this and fwc:s answer I created a pip installable package https://github.com/mkorpela/overrides
From time to time I end up here looking at this question.
Mainly this happens after (again) seeing the same bug in our code base: Someone has forgotten some "interface" i...